Machine for feeding and registering sheets of paper



(No Model.) 2 Sheets-Sheet 1.

- E. DUMMER. MAGHINE FOR'FBBDING AND REGISTERING SHEET$ OF PAPER.

Patented Dec. 17, 1895'.

4 INVENTU.

ANDREW EGRAHAM. PNUTOimIQWASMNGTDNfl C (No Model.) 2 Sheets-Sheet 2.

' E. DUMMER. v MACHINE FOR FEEDING AND REGISTERING SHEETS OF PAPER. No.551,747. Patented Dec. 17, 1895 WA -gsszs: INVENTEIRI ANDREW EGHAHAM.PHUTo-UTKD.WASIHN5TON.D C.

UNITED STATES. PATENT OFFIcE.

EDXVARD DUMMER, OF AUBURNDALE, MASSACHUSETTS, ASSIGNOR TO THE DUMMERPAPER FEEDER COMPANY, OF PORTLAND, MAINE.

MACHINE FOR FEEDING AND REGISTERING SHEETS OF PAPER.

SPECIFICATIONfOrming part of Letters Patent N 0. 551,747, dated December17, 1895. Application filed July 9, 1894. Serial No. 5163881 (No model.)

that the edge at the front and the edge at a side of the sheet will beat gages, as required, for instance, in a printing-machine, the invention consisting in instruments having a fric tion-surface (which Iherein term wipers in combination with said support and gages, and withpresser-feet, as hereinafter set forth, and specifically pointed out inthe claims.

In the drawings, two sheets, Figure 1 is a vertical section, and Fig. 2aplan, of so much of sheet-registering mechanism and a printing-machineas is sufficient to illustrate my invention. Figs. 3, 4, 5, and 0 showdetails drawn on a larger scale.

The feed-board A, impression cylinder B, gages a and grippers b may bethose of an ordinary printing-machine. A sheet is seized by a lowerroller C and-upper rollers D and carried by them and a belt 0 androllers or balls cl onto and along the feed-board A until the front edgeof the sheet is approximately near the gages a. Supported by suitablebearings is a transverse shaft E driven by a sprocketwheel and a chain,as shown. These bearings are on stands F, secured to theprintingmachine. On the shaft E are disks or carriers G, in which areadjustably secured projections or wipers 6, preferably flexible andhaving a friction-surface, their adjustment with reference inthecarriers being by screwing the same in the carriers, as illustrated.-

These carriers revolve'with the shaft E, but are adjustable on the shaftlengthwise by means of arms f, which may be slid and secured by means ofthe thumb-screws shown in any required position on fixed transverse rodsg, held in position by the stands E. On the shaft E are bevelgears h,which revolve with the shaft, but may be slid lengthwise thereof bymeans of arms H, which may be slid on the rods g and secured by means ofthe thumb-screws shown in any desired position. Each of the arms H hasbearings fora shaft'i at right angles to the shaft E. On each shaft 71is a bevel-gear to engage with a corresponding gear h, and a disk orcarrier j having a wiper it like a wiper e. Pivoted on a rod g is apresser-footl to move lengthwise on the rods 9 with'arms f andadjustable by means of the thumb-screw shown to and from thecorresponding gagea. Each presserfoot Z may bear on the support for thesheet or on the sheet between said support and presser-foot, near thegage. Provision is made for a wiper eto come in contact with a sheetwhen between a presser-foot Z and the sheet-support.

On each carrier G is a cam which, bymeans of an arm m, secured to thecorresponding presser-foot, raises and lowers the presserfoot asrequired. Each arm H has a projection a, to which is pivoted a side gage0, this gage having projection 19, to which is pivoted a presser-foot q.Provision is made whereby a wiper kmay come into contact with a sheetwhen between the corresponding presser-foot q and the sheet-support.Each carrier j has a cam fixed thereto to raise and lower by means of anarm 0" both the corresponding gage o and presser-foot, as required.

A sheet shaving been carried so that its front edge is approximatelynear to the front gages a, and a side edge near to a side gage 0, one ofthe wipers e on each of the carrriers G will come into contact with thesheet and carry the corresponding front edge of the sheet closely to thegage at opposite thereto. Each of the presser-feet Z being down andresting by gravity on the sheet while a wiper e is operating on thesheet, wrinkling or curling of the sheet by the wiper will be prevented.After action on the sheet of one of each pair of wipers e, thepresser-feetl are lifted by the cams on carriers G. Thereupon the cam ona carrier j allows a side gage o to drop onto the feed-board and apresser-foot q to drop onto the sheet and rest thereon. A side wiperthen carries the sheet until the side edge meets the gage o. Thereafterthe other one of each pair of wipers e acts on the sheet, thepresser-feet being allowed to again rest on the sheet, so as to insurethat the front edge of the sheet will be at the gages a when thegrippers Z) seize the sheet. This repetition of action on the sheet topress the front edge against the gages a is desirable, since the sheetis apt to be so disturbed in its movement sidewise to meet the side gageas not to be in exact register with the front gages. There being an armII bearing aside gage and a presser-foot for each side of a sheet,registering at either side of the sheet may be done at will. ()n thatside at which registering is required the corresponding arm H is so setas to bring the gage 0 into the position required, and the gage is setfree to drop as illustrated in Fig. 3, while the other arm If may beslid so as to bring the corresponding presser-foot and gage out of theway of the sheet, the gage and presscr-foot being held up by means of alatch t, and the wiper removed, as illustrated by Fig. 6.

The device for registering herein described is adapted to assist inhand-feeding, the carrier to deliver the sheet onto and convey it down,the feed-board being dispensed with. If a sheet be placed by handapproximately near to the front and side gages, the wipers, or thewipers together with the presser-feet, will cause the sheet to meet thegages as desired, the ordinary accurate adjustment of the sheet by handnot being required.

In certain cases-as, for instance, when the sheets are of quite heavypaper-the presserfeet at the front and side of the sheet may be, as toall or part of them, dispensed with. The presser-feet are important,however, in many cases, and it is also desirable that the presserfeetrest on or press the sheet between the same and the support, so that thesheet, especially when quite thin, will not bend up or wrinkle when theedges thereof are forced by the wipers against the gages. Lifting theside gage as well as the presser-foot thereat provides for a freepassage of the sheet to the front gages, even though the sheet, whenpassing the side gage, is somewhat angular with reference to the supportand front gages. If the side gage was down and the edge of the sheetshould touch the gage as the sheet moved forward, such friction of theedge against the gage might cause the sheet to swing so as not to bebrought into accurate register. Moreover, a sheet (when in positionsomewhat angular with reference to the gages) may so pass the side gagethat the corner of the sheet may actually pass under the raised sidegage, and yet that part of the edge of the sheet which is opposite tothe side gage when the front edge has reached approximately near thefront gages will be within and away from under the side gage. 'lhoughthe sheet (before bcin g acted on by the wipers) be somewhat angularwith reference to the gages, the front edge of the sheet will be broughtby the wipers to the gages owing to the flexibility of the wipers, whichpermits the front edge of the sheet to slide against either gage theslight distance required to cause the edge to meet both front gages.

I claim as my invention- 1. In combination with front-gages and asupport for a sheet, wipers to engage successively with the sheet tomove the sheet to meet said front gages, a sidc-gage, and a wiper toengage with the sheet and move the sheet to meet said side-gage at atime between the successive operations on the sheet of the wipers forthe front-gages, substantially as set forth.

2. The combination with front-gages and a support for a sheet and acarrier to move the sheet forward of a side-gage, a wiper to en.- gagewith the sheet and cause the sheet to meet said side-gage, and a devicefor lifting said side-gage while the sheet is moving forward,substantially as and for the purpose specified.

3. The combination with a sheet-supp0rt, front-gages and a device formoving the sheet to meet said front-gages, of a side gage, apresser-foot, a wiper to move the sheet under the presser-foot to meetthe side-gage, and a device for lifting said presser-foot and sidegagewhile the sheet is moving forward, substantially as and for the purposeset forth.

4:. The combination. of a sheet-support, front-gages, a side-gage, atransverse shaft, wipers and carriers therefor on said shaft, atransverse, stationary rod, presser-l'eet adjustable on saidrod, a shaftsupported at right angles and geared to the transverse shaft andprovided with a wiper and holder therefor, a presser-foot at saidside-gage, and cams on said shafts to lift said presser-feet and theside-gage, substantially as specified.

5. In sheet-registering mechanism and in combination with front-gages, aside-gage and means for moving a sheet to meet said gages, a device forsuitably lifting the side-gage so that the side-edge of the sheet orcorner formed by the side and front-edge of the sheet will not strike orrub against the side-gage to displace the sheet while the sheet ismoving forward to meet the front-gages, substantially as specified.

EDWARD DUMME'H.

\Vitnesses:

EDWARD W YMAN, FRED 'W'. MoAnDLn.

IIO

